SILVER BASED REFLECTOR WITH HYBRID PROTECTION LAYERS

摘要

A silver-based reflector includes a hybrid protection layer that includes a thin Aluminum (Al) protection layer thermally deposited onto a Silver (Ag) reflective layer, which prevents yellowing or tarnishing of the Ag reflective layer. In an embodiment, a lamp reflector is formed by providing a substrate material in the shape of a reflector, thermally depositing an Ag reflective layer onto the an interior surface of the reflector having a sufficient thickness to reflect light, and thermally depositing an Al protective layer onto the Ag reflective layer to protect the Ag reflective layer from oxidation and sulfide formation. The Al protective layer has a thickness within the range of about 30 angstroms (Å) to about 100 Å.

主权项

1. A method of forming a reflector for a lamp comprising:
providing a substrate material in the shape of a reflector having an interior surface and an exterior surface; thermally depositing a silver (Ag) reflective layer onto the interior surface of the substrate material, the Ag reflective layer of a sufficient thickness to reflect light; and thermally depositing an aluminum (Al) protective layer onto the Ag reflective layer to protect the Ag reflective layer from oxidation and sulfide formation, wherein the Al protective layer has a thickness within the range of about 30 angstroms (Å) to about 100 Å.